penetration

penetration

[pen′ətrā′shən]

1 a piercing or entering.

2 intellectual discernment.

3 a stage in establishment of a viral infection in which the viral genetic material enters the host cell through fusion, phagocytosis, or injection.

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penetration (pen´trā´shn),

n the ability of radiation to extend down into and go through substances. The degree of penetration is determined by the kilovoltage.

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penetration

Managed care See HMO penetration Sexology Entrance of the penis into the vagina or anus. See Sexual penetration.